TC Bros King & Queen Seat Mounting Kit

TC Bros Universal Frisco Gas Tank Mounting Kit

Mount your gas tank with confidence using this complete Frisco-style mounting kit. Everything you need for a professional, secure installation on custom choppers and bobbers.

Complete Kit Includes

• 3/8-16 stainless steel button head bolts - Corrosion-resistant hardware for long-lasting durability
• 1018 mild steel tophat bungs - Precision-engineered weld-on mounts for secure tank attachment
• Leather cushion washers - Protect your tank finish and dampen vibration
• Stainless steel washers - Complete the professional installation

Key Features

• Universal Frisco-style design - Classic mounting solution for custom gas tanks
• Premium materials - Stainless steel fasteners resist rust and corrosion
• Complete hardware package - No need to source individual components
• Professional finish - Button head bolts provide a clean, low-profile look
• Vibration dampening - Leather washers protect tank paint and reduce metal-to-metal contact

Applications

This mounting kit is ideal for custom motorcycle builders working on choppers, bobbers, and cafe racers. The Frisco-style mounting system is a time-tested solution that provides secure tank attachment while maintaining the clean lines of a custom build.

Installation Note: Tophat bungs require welding to the frame. Ensure proper fitment and alignment before welding.

Leather Cushion Washers with 3/8 inch Hole 10 pack

These leather washers are perfect for protecting your paint and are more durable than rubber. The cushioning & dampening effect that these washers provide is perfect for installing between your frame and mounting tabs found on gas tanks, fenders, oil tanks, or anything else you want to protect from vibration. Also great for use under solo seat springs to prevent squeaking. Dimensions are 1 inch diameter x 3/8 inch hole x 1/8 inch thick. Sold in pack of 10 washers.

Heavy Duty Oil Tank Mounting Kit

Use this kit to mount TC Bros. Oil Tanks to our Sportster Hardtail.

Can also be used for universal applications. Made in USA

Build Your Dream Custom Seat with Professional-Grade Mounting Hardware

Transform your bobber or chopper build with TC Bros' precision-engineered Weld On Solo Seat Spring Mounts. These CNC-machined mounts deliver the rock-solid foundation your custom seat deserves, combining old-school craftsmanship with modern manufacturing precision.

Why Riders Choose These Mounts

Imagine the satisfaction of a perfectly mounted solo seat that moves with you on every ride—no rattles, no flex, just smooth suspension action from your torsion springs. These aren't stamped sheet metal brackets that'll fail after a season. They're machined from solid 1018 cold rolled steel, built to handle years of hard riding.

Key Features

• CNC Machined Precision: Crafted from 1018 cold rolled steel for superior strength and durability
• Universal Fit Design: 1 1/8" radius cope fits both 1" and 1 1/4" cross tubes seamlessly
• Stainless Hardware: 5/16"-18 stainless steel studs resist corrosion and maintain clamping force
• Torsion Spring Compatible: Engineered specifically for torsion-style seat springs
• Weld-Ready Finish: Clean steel surface ready for your torch—no prep work needed
• Complete Kit: Includes 2 mounts, 2 stainless washers, 2 studs, and 2 nylock nuts

Technical Specifications

• Material: 1018 Cold Rolled Steel
• Stud Thread: 5/16"-18
• Base Diameter: 1"
• Cope Radius: 1 1/8"
• Tube Compatibility: 1" and 1 1/4" cross tubes
• Finish: Raw steel (weld-ready)
• Country of Origin: USA

What's in the Box

• 2 × CNC Machined Steel Mounts
• 2 × Stainless Steel Studs
• 2 × Stainless Steel Washers
• 2 × Nylock Nuts

Note: Seat springs sold separately

Installation Made Simple

The pre-coped radius means these mounts sit flush against your frame tube right out of the box. Position them where you want your seat, tack them in place, check your alignment, then lay down a solid bead. The universal design gives you complete freedom to position your seat exactly where it feels right for your build.

Built by Builders, for Builders

TC Bros understands what custom motorcycle fabricators need because they're fabricators themselves. These mounts represent the same quality and attention to detail you'll find throughout their entire line of chopper and bobber components.

Ready to mount your custom seat the right way? Add these professional-grade spring mounts to your cart and take the next step in your build.

TC Bros Sportster Weld-On Hardtail Kit - Premium Rigid Frame Conversion

Transform your Harley Sportster into a classic hardtail chopper or bobber with this precision-engineered weld-on hardtail kit. Designed for builders who demand quality and performance, this kit delivers a professional rigid frame conversion.

Fitment

• Application: Harley-Davidson Sportster 1982-2003
• Tire width range: 130-150mm
• Installation: Weld-on (professional installation recommended)
• Weight: 30 lbs

Key Features

• Accommodates 130-150mm tire widths - Versatile fitment for vintage and modern tire sizes
• Precision-engineered weld-on design - Professional-grade construction for permanent installation
• Complete hardtail conversion kit - Everything needed for a rigid frame transformation
• Premium American steel construction - Built to TC Bros exacting quality standards
• Classic chopper/bobber styling - Authentic hardtail profile for custom builds

Tire Compatibility

This hardtail kit works with a wide range of tire sizes including:

• 130mm width tires (130/90, 130/80)
• 140mm width tires (140/90, 140/80)
• 150mm width tires (150/80, 150/70)

What's Included

This complete kit includes all necessary components for your Sportster hardtail conversion. Professional welding skills and equipment required for installation.

Important Installation Note: This is a weld-on hardtail kit that requires permanent modification to your motorcycle frame. Professional fabrication and welding experience is strongly recommended. Ensure proper fitment and alignment before welding.

Build Your Dream Bike: Pair this hardtail with TC Bros fenders, sissy bars, and fabrication hardware to complete your custom Sportster build.